1C3T

ROTAMER STRAIN AS A DETERMINANT OF PROTEIN STRUCTURAL SPECIFICITY

• PDB DOI: https://doi.org/10.2210/pdb1C3T/pdb
• BMRB: 4663

• Classification: DE NOVO PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21
• Mutation(s): Yes 


• Deposited: 1999-07-28 Released: 1999-08-20 
• Deposition Author(s): Lazar, G.A., Johnson, E.C., Desjarlais, J.R., Handel, T.M.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 30 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

Rotamer strain as a determinant of protein structural specificity.

Lazar, G.A., Johnson, E.C., Desjarlais, J.R., Handel, T.M.

(1999) Protein Sci 8: 2598-2610

• PubMed: 10631975 
• DOI: https://doi.org/10.1110/ps.8.12.2598
• Primary Citation of Related Structures:  
  1C3T


• PubMed Abstract: 
  

  We present direct evidence for a change in protein structural specificity due to hydrophobic core packing. High resolution structural analysis of a designed core variant of ubiquitin reveals that the protein is in slow exchange between two conformations. Examination of side-chain rotamers indicates that this dynamic response and the lower stability of the protein are coupled to greater strain and mobility in the core. The results suggest that manipulating the level of side-chain strain may be one way of fine tuning the stability and specificity of proteins.

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Organizational Affiliation: 

Department of Molecular and Cell Biology, University of California, Berkeley 94720, USA.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 8.58 kDa 
• Atom Count: 602 
• Modelled Residue Count: 76 
• Deposited Residue Count: 76 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (1D8 UBIQUITIN)	A	76	Homo sapiens	Mutation(s): 8
UniProt & NIH Common Fund Data Resources
Find proteins for P0CG48 (Homo sapiens) Explore P0CG48  Go to UniProtKB:  P0CG48
PHAROS:  P0CG48 GTEx:  ENSG00000150991

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 30 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-08-20 
Deposition Author(s): Lazar, G.A., Johnson, E.C., Desjarlais, J.R., Handel, T.M.

Revision History  

• Version 1.0: 1999-08-20
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2018-03-14
  Changes: Database references, Derived calculations
• Version 1.4: 2024-04-10
  Changes: Data collection, Database references